Li-Po Battery Fireproof Portable Explosion-Proof Safety Bag is safest way to charge and store your Li-pos. The new version bag surface using new material , it can also protect your battery from outsitde fire. It is fireproof and high temperature flame retardant .It can Protect your workshop, family and home from the hazard of lipo charging. This is a fireproof bag, designed to stop and contain any fire caused by incorrectly charging or poorly functioning lipo packs.